Subject: Mail delivery failed: returning message to sender

From: Mail Delivery System <[email-masked]>
Date: Sat, 06 Dec 2025 23:12:39 -0800

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  [email-masked]
    host gafastigheter-se0e.mail.protection.outlook.com [52.101.68.12]
    SMTP error from remote mail server after RCPT TO:<[email-masked]>:
    550 5.4.1 Recipient address rejected: Access denied. For more information see https://aka.ms/EXOSmtpErrors [DB1PEPF000509F8.eurprd02.prod.outlook.com 2025-12-07T07:12:39.206Z 08DE2E779D4F98C6]